There are many great benefits of replacing a VELUX roof window for example it allows for a better indoor climate, more daylight, and improved energy efficiency. Luckily, it is quite easy to replace; in fact, it can be done in a short amount of time if everything is prepared correctly. We do recommend getting your VELUX window installed by a VELUX certified installer. In this post, we show you how to find your VELUX window type and size on your window and how to know which type of window you have and could get in the future.
Locating VELUX Roof Window Type and Size
You can find the type of window and its size on the date plate which is attached to your window. Here is a short video by VELUX which demonstrates on how to do it.
However, this is not all. You also need to know from which era your window comes from. There are four main eras. Before 1992, 1992-2001, 2001-2014, and From 2014. All of these date plates will look different and will help identify what age your window is. Here is a picture example of the four eras.
Window Types
GGL – Centre-pivot roof window in pine
GGLS – 3-in-1 centre-pivot roof window in pine
GPU – Top-hung roof window in polyurethane, 45°
GPL – Top-hung roof window in pine, 45°
GIU – Sloping extension window element in polyurethane
GIL – Sloping extension window element in pine
VIU – Fixed vertical extension window element in polyurethane
VFE – Openable vertical window element in pine, tilt inwards
VFA – Openable vertical window element in pine, tilt and turn inwards/left-hinged
VFB – Openable vertical window element in pine, tilt and turn inwards/right-hinged
GDL – VELUX CABRIO® roof balcony
GEL – Top-hung roof terrace section in pine
VEA – Left-hinged vertical roof terrace section in pine
VEB – Right-hinged vertical roof terrace section in pine
VEC – Fixed vertical roof terrace section in pine
GVT – Side-hung craftsman’s roof exit for uninhabited rooms (black polyurethane)
TWF/TLF – Flexible sun tunnel
TWR/TLR – Rigid sun tunnel
CVP – Electric flat roof window
CFP – Fixed flat roof window
CSP – Flat roof smoke ventilation window
CXP – Flat roof exit window, 60°
Interior finish
0 – White polyurethane
2 – White painted wood
Exterior cover
0 – Aluminium
Glazing
66 – 3-layer glazing for high energy efficiency with easy-to-clean and anti-dew coatings
67 – Our best performing 3-layer glazing delivering optimal energy efficiency and indoor comfort
68 – 3-layer glazing for improved energy efficiency
70 – 2-layer glazing with rain noise reduction, laminated safety glass, UV protection and extra toughened glass
Operation
21U – Mains powered roof window, VELUX INTEGRA®
30 – Solar powered roof window, VELUX INTEGRA® Solar
40 – Smoke ventilation
Roof Window Sizes
PK25 – 942mm x 550mm
MK27 – 780mm x 624mm
CK01 – 550mm x 698mm
SK01 – 1140mm x 698mm
CK02 – 550mm x 778mm
BKO4 – 472mm x 978mm
CK04 – 550mm x 978mm
FK04 – 660mm x 978mm
MK04 – 780mm x 978mm
PK04 – 942mm x 978mm
UK04 – 1340mm x 978mm
CK06 – 550mm x 1178mm
FK06 – 660mm x 1178mm
MK06 – 780mm x 1178mm
PK06 – 942mm x 1178mm
SK06 – 1140mm x 1178mm
UK06 – 1340mm x 1178mm
FK08 – 660mm x 1398mm
MK08 – 780mm x 1398mm
PK08 – 942mm x 1398mm
SK08 – 1140mm x 1398mm
UK08 – 1340mm x 1398mm
MK10 – 780mm x 1600mm
PK10 – 942mm x 1600mm
SK10 – 1140mm x 1600mm
UK10 – 1340mm x 1600mm
MK12 – 780mm x 1800mm
Sloping fixed additional elements
MK34 – 780mm x 920mm
PK34 – 942mm x 920mm
SK34 – 1140mm x 920mm
UK34 – 1340mm x 920mm
Centre-pivot 3-in-1
FFKF06 – 1880mm x 1178mm
FFKF08 – 1880mm x 1398mm
Vertical elements
MK31 – 780mm x 600mm
PK31 – 942mm x 600mm
SK31 – 1140mm x 600mm
UK31 – 1340mm x 600mm
MK35 – 780mm x 954mm
PK35 – 942mm x 954mm
SK35 – 1140mm x 954mm
UK35 – 1340mm x 954mm
MK36 – 780mm x 1154mm
PK36 – 942mm x 1154mm
SK36 – 1140mm x 1154mm
UK36 – 1340mm x 1154mm
MK38 – 780mm x 1374mm
PK38 – 942mm x 1374mm
SK38 – 1140mm x 1374mm
UK38 – 1340mm x 1374mm
VELUX CABRIO balcony
MK19 – 780mm x 2520mm
PK19 – 942mm x 2520mm
SK19 – 1140mm x 2520mm
Flat-roof windows
060060 – 600mm x 600mm
080080 – 800mm x 800mm
060090 – 600mm x 900mm
090090 – 900mm x 900mm
100100 – 1000mm x 1000mm
090120 – 900mm x 1200mm
120120 – 1200mm x 1200mm
100150 – 1000mm x 1500mm
150150 – 1500mm x 1500mm
Roof Terrace
M08 – 780mm x 1360mm
M35 – 780mm x 1090mm
